JPH0445366Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) This invention relates to a curved roller for multiple strands used at a curved part in the simultaneous simultaneous running of multiple strands of coaxial cable.

(Conventional technology) Curves in conventional overhead distribution lines, especially
Curved rollers used for curves with large angles of about 90° are made of small diameter rollers arranged in a curved shape, as a single large diameter roller would be large and heavy. ing.

(Problem that the invention aims to solve) However, coaxial cables for CATV etc. use aluminum pipes, which are lightweight and weak against lateral pressure. Being squeezed.
Therefore, such curved rollers are not suitable. Furthermore, it is desired that multiple coaxial cables be installed simultaneously.

However, as mentioned above, coaxial cables are aluminum pipes, so they bend easily even when a small force is applied to them, and once bent, they do not return to their original shape. Therefore, it tends to become curly, and when multiple coaxial cables are stretched at the same time, they tend to bend or become tangled with other cables. If the coaxial cable is bent, tangled, or twisted in this way, it not only looks bad after being stretched, but also has the risk of crushing the aluminum pipe, in which case the cable transmission characteristics will deteriorate. In addition, the position of the cable to be pulled in or branched out is shifted, making it difficult to pull in or branch out.

For these reasons, it is necessary to separate and align multiple coaxial cables while extending them.

At present, there is no curved roller for multiple strands suitable for simultaneously running multiple strands of coaxial cable at once.

(Means for solving the problem) Therefore, this idea uses a roller with a large diameter so as not to damage the coaxial cable, and in order to make the radius of curvature of the multiple cables the same, the multiple cables are passed vertically. Furthermore, cable guides having holes through which each cable passes are provided at the introduction and exit points of the roller to prevent the cables from tangling with each other.

Its structure is such that a vertical shaft is protruded from a support that has a support fixture on one side for supporting other objects, and a roller is installed on this vertical shaft so that it can rotate freely, and each cable is connected to the outer circumference of the roller. A large number of cable grooves are provided for insertion, substantially vertical cable guide bodies are provided near two locations on the outer periphery of the roller, and each of these cable guide bodies is supported by an arm that protrudes above and below the drum from the vertical axis, Each of these cable guide bodies is provided with a number of holes through which each cable is inserted, corresponding to each cable groove of the roller, and each of these holes has an opening on one side. Each of these openings is closed by a rotating rod rotatably and lockably provided on one side of each cable guide body.

(Operation) This device fixes the support to the curved cable extension point, for example to a utility pole, with a support fixture, and inserts multiple cables into the holes of one cable guide body, and each cable is inserted into the cable grooves of the roller. The cables are then inserted into the holes of the other cable guide body and led out to the outside of the curved roller of this device. When multiple cables are extended at the same time,
Each cable guide moves to the location where the cable enters and exits the roller according to the curvature of the cable at this location. As a result, each cable first enters the hole of one cable guide body, enters the cable groove of the roller, rotates with the roller, and exits through the hole of the other cable guide body. When a yoke or the like passes through, a rotating rod on one side of each cable guide body is rotated to open the hole of the cable guide body and allow it to pass through.

(Example) An embodiment of this invention will be described below with reference to the drawings.

1 is a horizontally long rectangular cylindrical arm, 2 is a stay vertically fixed to one end of this arm 1, and 3, 3 is this stay 2.
The utility pole seat boards installed above and below, 4, 4 are this stay 2
A utility pole mounting bracket protrudes from both sides in the middle, 5 is a clevis bolt rotatably provided with a pin on one utility pole mounting bracket 4, 6 is a tightening bracket rotatably provided on this clevis bolt 5, and 7 is this A link chain whose one end is fixed to the tightening fitting 6; 8 is a special wing nut screwed onto the clevis bolt 5; 9 is a chain holder provided at the other end of the link chain 7; It can be freely locked to the utility pole mounting bracket 4 with a pin. 1
0 is a fixed shaft vertically protruding from the upper surface of the other end of the arm 1, 11 is a large diameter drum provided on the outer periphery of the fixed shaft 10, and this drum 11 has a cylindrical shaft 12 at its center. The tips of a large number of stays 11b extending radially from the outer periphery of a cylindrical housing 11a rotatably mounted on the outer periphery of this cylindrical shaft 12 are respectively fixed to the inner periphery of an outer circumferential plate 11c. A shaft 12 is placed over the outer periphery of the fixed shaft 10. 13 is a lining provided on the outer periphery of the outer peripheral plate 11c of this drum 11, and 14 is a large number of cable grooves provided along the outer peripheral surface of this lining 13. This drum 11 has two cable grooves 14.
B and a drum 11A having three strips are simply stacked on top of each other, and can be separated into drum 11A and drum 11B. 15, 15 are collars provided on the outer periphery of the fixed shaft 10 on the upper and lower sides of this drum 11;
16, 16 have one end rotatably crowned on the outer periphery of these collars 15, 15, and the other end is attached to the drum 11.
17, 17 are cable guide bodies whose upper and lower sides are supported by the corresponding upper and lower arms 16, 16, respectively; 18 is a cable guide arm of each of these cable guide bodies 17; This is a shaft for guide rollers.The upper and lower parts of the shaft 18 are inserted into the notched grooves 19 bored at the tips of the arms 16 for each guide body, and the tightening nuts 20 screwed into the upper and lower ends are tightened to secure the arms 16 for each guide body. It is fixed at Reference numeral 21 denotes a large number of guide rollers rotatably provided on the outer periphery of each guide roller shaft 18, and each of these guide rollers 21 is provided facing each cable groove 14 of the drum 11. Numerous separation plates 22 are provided between and above and below each of these guide rollers 21, with the shaft 18 passing through its own hole, and 23 is the uppermost separation plate 2.
2 is a rotating rod with one end rotatably provided, and this rotating rod 23 has a notch 2 bored in one side of the other separating plate 22
4, the notch 24 of the lowest separation plate 22
It is fixed by tightening a tightening nut 25 screwed onto the lower end (free end) of the rotating rod 23 into a groove 22a provided on the inner periphery of the lower surface. Further, the rotating rod 23 has a cover body 23a for protecting the cable on its outer periphery. A cable insertion hole 26 is formed beside the guide roller 21, the upper and lower sides of which are shielded by separation plates 22, and the left and right sides of which are surrounded by the rotation rod 23 and each guide roller 21.

Note that 27 in the figure is a hook provided on the stay 2.

In order to use the product of this embodiment at a curved area close to 90° in the simultaneous batch extension method for multiple coaxial cables, first attach the utility pole seat plate 3 at one end of the arm 1 to the utility pole (not shown). The link chain 7 with one end free is wound around the outer circumference of the utility pole, and the chain holder 9 at the tip of the link chain 7 is fixed to one of the utility pole mounting brackets 4 with a pin.
Tighten the special wing nut 8. As a result, the link chain 7 is tensed, and the arm arm 1 is fixed to the telephone pole.
Supported approximately horizontally. After the cross arm 1 is fixed to the telephone pole in this way, one collar 15 with two rotatably provided guide arms 16 is passed through the fixed shaft 10 at the tip of the arm 1, and the drum 11A and The drum 11B is connected to each cylindrical shaft 1.
2 over the fixed shaft 10 and are installed in order. Then, the other collar 15, on which the two guide body arms 16 are rotatably provided, is fitted onto the fixed shaft 10 on the upper part of the drum 11. After that, insert the guide roller shaft of each cable guide body 17 into each notch groove 19 of each guide body arm 16, tighten the tightening nut 20, and tighten the two cable guide bodies 17.
The upper and lower ends of each are fixed to two sets of guide body arms 16 corresponding to the upper and lower sides.

Then, the tightening nuts 25 of the rotating rods 23 of each cable guide body 17 are loosened to allow the rotating rods 23 to freely rotate. Then, turn the turning rod 23 of the cable guide body 17 at the cable introduction point to open it, insert each coaxial cable (not shown) into each hole 26, and insert the turning rod 23 into the notch 24 of each separation plate 22 again. Tighten the tightening nut 25 to fix the rotating rod 23. Then, each coaxial cable is put into each corresponding cable groove 14 of the drum 11, and each coaxial cable is passed through each hole 26 of the cable guide body 17 at the cable lead-out location in the same manner as described above.

In this manner, multiple coaxial cables are attached to the curved roller of this embodiment, and these multiple coaxial cables are extended all at once. Then, each coaxial cable enters each cable groove 14 on the outer periphery of the drum 11 through each hole 26 of one cable guide body 17, rotates the drum 11, and exits from each hole 26 of the other cable guide body 17. . At this time, the upper and lower guide body arms 16 of the two cable guide bodies 17 are free to rotate with respect to the fixed shaft 10, so each coaxial cable can be introduced into the drum 11 and moved to the lead-out point, and the cables can be moved. Follow.

Fig. 4 shows the case of extending three coaxial cables, and in this case, the three-strand drum 11A
A spacer collar 28 is attached to the fixed shaft 10 between the upper collar 15 and the drum 11A. Thereby, the cable guide body 17 of the above embodiment can be used.
This also applies to the case where only two drums 11B are used. As described above, in these embodiments, since the drum 11 is divided into two parts, the minimum number of drums can be attached as necessary, the drum does not become unnecessarily heavy, and workability is improved. Moreover, the same material can be used by using a spacer collar.

It should be noted that if the drum 11 is used as in this embodiment, even if it has a large diameter, it is hollow and light in weight and easy to handle, but it is not limited to the drum, but any other suitable roller may be used.

(Effect of the invention) This invention has the above structure, and the multi-strand coaxial cable passes through each hole in the cable guide body at the introduction and exit points, and also passes through each cable groove provided on the outer periphery of the large diameter roller. Therefore, each cable is separated and held in place as it passes through the curved rollers of this invention. Therefore, the multiple coaxial cables do not become entangled with each other at this curved roller location.
Moreover, since each of the cable guide bodies is movable along the outer periphery of the drum-shaped roller, no matter which direction the cable extends, the cable can be naturally introduced into the roller at that point, and the cable guide body can be placed at the point where the cable is led out. This prevents the cable from being bent or damaged at this cable guide body, and prevents unnecessary loads from being applied to the cable. Furthermore, since the multi-strand coaxial cables are turned vertically at this curved roller location, the radius of curvature is the same, making the tension between the multi-strand coaxial cables uniform. 90° to pass through an even larger diameter roller.
This prevents damage to the coaxial cable even with a curvature of .

As described above, the curved roller of this invention is suitable for simultaneous simultaneous running of multiple cables, and in particular, when used when simultaneously running multiple coaxial cables, it separates multiple coaxial cables. The coaxial cables can be passed through the coaxial cables while maintaining a predetermined position and maintaining the tension balance, and can be extended without damaging each coaxial cable.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional front view of this invention, Fig. 2 is a plan view thereof, Fig. 3 is an enlarged partially sectional side view of the cable guide body of this invention, and Fig. 4 is another embodiment of this invention. FIG. In the figure, 1 is the arm arm, 10 is the fixed shaft, and 11
12 is a drum, 12 is a cylindrical shaft, 14 is a cable groove, 16 is an arm for a guide body, 17 is a cable guide body, 18 is a shaft for a guide roller, 21 is a guide roller, 22 is a separating plate, 23 is a rotating rod, 2
6 is a hole.

Claims (1)

[Scope of utility model registration request] A vertical shaft is provided protruding from a support body that has a support fixture on one side for supporting other objects, a roller is provided rotatably on this vertical shaft, and a cable groove into which each of the multiple cables is inserted is provided on the outer periphery of the roller. A large number of cable guide bodies are provided near the outer periphery of this roller at two locations, and each of these cable guide bodies is supported by an arm that protrudes above and below the drum from the vertical axis, and is connected to the outer periphery of the drum. Each of these cable guide bodies has a number of holes through which each cable is inserted, corresponding to the cable grooves of the roller, and each of these holes has an opening on one side. A curved roller for multiple threads, characterized in that each opening of the cable guide body is closed by a rotary rod rotatably and lockably provided on one side of each cable guide body.